1211120003 has 2 divisors, whose sum is σ = 1211120004. Its totient is φ = 1211120002.

The previous prime is 1211119999. The next prime is 1211120083. The reversal of 1211120003 is 3000211121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211120003 - 2² = 1211119999 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211120083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605560001 + 605560002.

It is an arithmetic number, because the mean of its divisors is an integer number (605560002).

Almost surely, 2^1211120003 is an apocalyptic number.

1211120003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211120003 is an equidigital number, since it uses as much as digits as its factorization.

1211120003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1211120003 is about 34801.1494494076. The cubic root of 1211120003 is about 1065.9309171123.

Adding to 1211120003 its reverse (3000211121), we get a palindrome (4211331124).

The spelling of 1211120003 in words is "one billion, two hundred eleven million, one hundred twenty thousand, three".